End the Electrical Gremlins in Your GM Vehicle
Are you chasing bizarre electrical issues in your car, truck, or SUV? Flickering lights, power windows with a mind of their own, malfunctioning door locks, or a security system that randomly goes off can all point to one culprit: a failing Body Control Module (BCM). As the central command center for your vehicle’s body electronics, a faulty BCM can cause chaos. This Programmed GM BCM is the definitive, hassle-free solution to restore order and get your vehicle operating as it should.
We take the guesswork and extra expense out of the repair. Simply provide your vehicle’s VIN during checkout, and our technicians will program this module with the latest official GM software specific to your vehicle. It arrives at your door ready for installation, saving you a trip to the dealership and their expensive programming fees.
From the Diagnostic Bay: The Case of the Confused Acadia
I remember a 2011 GMC Acadia that came into my shop with a laundry list of complaints. The owner was frustrated—the radio would shut off, the dome lights wouldn’t work, and the driver’s side power window was dead. He’d replaced fuses and relays with no luck. A quick scan showed a dozen communication codes, primarily a U0140 (Lost Communication With Body Control Module). These symptoms are classic signs of a BCM failure. Water intrusion from a leaky windshield seal had corroded the board. Instead of a complex rewiring job, we installed a VIN-programmed BCM. In under an hour, every single one of his electrical problems was gone. This is a fix I’ve performed hundreds of times, and it brings vehicles back from the brink of being an electrical nightmare.
Common Signs of a Failing BCM
If your vehicle is exhibiting any of these symptoms, a failing Body Control Module is the likely cause. Replacing it with our Programmed GM BCM can resolve these issues:
- ✔ Erratic or non-functional interior and exterior lights.
- ✔ Power windows, door locks, or mirrors operating intermittently or not at all.
- ✔ The security system or alarm engaging without reason.
- ✔ Instrument cluster warning lights (like the airbag or security light) staying on.
- ✔ Communication Diagnostic Trouble Codes (DTCs) such as U0140, U0155, or other ‘U’ codes.
- ✔ In some cases, a no-start condition where the ignition seems dead.
Your Straightforward BCM Installation Guide
Installing your new BCM is a manageable job for a DIYer with basic tools. While the exact location varies by model, the process is generally similar.
- Safety First: Always disconnect the negative terminal from your vehicle’s battery and wait a few minutes before beginning.
- Locate the BCM: On most of these GM models, the BCM is located under the driver’s side of the dashboard, often to the left of the steering column or behind a kick panel. On vans, it’s frequently behind the center dash panel.
- Disconnect and Remove: Carefully unplug the electrical connectors. They have locking tabs that need to be pressed to release. Once disconnected, unbolt or unclip the old module from its mounting bracket.
- Install the New Module: Mount your new, pre-programmed BCM in the same location. Securely plug in all the electrical connectors—they are color-coded and keyed to only fit in the correct spot.
- Power Up: Reconnect the negative battery terminal. Turn the key to the ‘On’ position and test all functions: lights, windows, locks, and radio.
- Perform Relearns (If Necessary): As noted below, some vehicles may require a simple relearn procedure for the brake pedal position sensor or airbag system.
Important Post-Installation Information
While our BCM is programmed for your VIN, some vehicle systems may require recalibration after the new module is installed. This is a normal part of the process.
- Airbag System Sync: If the airbag warning light is illuminated after installation, a ‘Setup SDM Primary Key in BCM’ procedure must be done with a professional scan tool. This syncs the airbag system with the new BCM.
- Brake Pedal Position Relearn: On certain models, a brake pedal position sensor relearn may be needed to ensure correct brake light operation and to prevent issues with the traction control system.
Disclaimer: We are committed to your success, but procedures can vary. Always consult a factory service manual or a certified technician if you are unsure about any step.
Verified Vehicle Compatibility
This module is a direct replacement for a wide range of GM vehicles and supersedes multiple part numbers, ensuring broad compatibility. It is guaranteed to fit and function in the following models, among others. Please match your original part number from the list below or contact us with your VIN to confirm fitment.
Replaces Part Numbers: 10382479, 15093910, 15276271, 15299986, 15819552, 15828601, 15837419, 15872388, 15872421, 15880684, 15921352, 15921353, 15948438, 15948439, 20815898, 20839063, 20864767, 20864768, 20921435, 20921436, 20935349, 22860591, 25826124, 25826125, 25847588, 25847589, 25892622, 25910474, 25934762, 25934763, 95151084
Fits Models Including: Acadia (07-12), Avalanche (10), Caprice (11-13), Captiva Sport (12), CTS (08-13), DTS (06-11), Enclave (08-12), Equinox (07-09), Escalade/ESV/EXT (10), Express/Savana Vans (08-12), G8 (08-09), H2 (08-09), Impala (06-13), Lucerne (06-11), Monte Carlo (06-07), Outlook (07-10), SRX (07-09), STS (10), Suburban (10), Tahoe (10), Torrent (07-09), Traverse (09-12), Vue (08-10), Yukon/Yukon XL (10).
Frequently Asked Questions
What exactly does a Body Control Module do?
The BCM is a computer that controls non-engine related functions in your vehicle. This includes power windows, power mirrors, air conditioning, the instrument cluster, interior and exterior lighting, security systems, and power locks. When it fails, these systems can behave erratically.
Is this BCM truly ready to install out of the box?
Yes. By programming the module to your specific VIN before we ship it, we handle the most complex step. For most installations, it is a direct replacement. Some vehicles may require additional, simple ‘relearn’ procedures for specific sensors as outlined in our description.
How do I provide my VIN for programming?
After you complete your purchase, you will need to send us your 17-digit Vehicle Identification Number (VIN). You can typically reply to your order confirmation email with the VIN. We cannot ship the module until we receive this information.
What if my airbag light is on after installation?
This is not uncommon. It simply means the new BCM needs to be electronically introduced to the airbag system’s computer (SDM). A repair shop with a professional-grade scan tool can perform the ‘Setup SDM Primary Key in BCM’ procedure in a few minutes to resolve this.
Do I need to send my old BCM back?
No. We do not require a core return for this part. You can keep your original module, which saves you the time, hassle, and expense of a core return shipment.